I need to develop a portlet (for GateIn framework), which lists all the clients of the selected company. First, user has to select a city from a dropdown (combobox). Next, another dropdown should be populated (or updated) with a list of companies from the selected city. When the user presses submit, portlet should display the result.
Portlet gets all this information from a few web services (written in PHP) using SOAP 1.1.
Therefore, I have the following questions: